Well, I probably butchered that name.
Anyways;
Say that something or other happens and the Japanese manage to successfully control the entirety of China. They need not be involved in the greater war surrounding them; All they have to do is conquer China, which, if I understand correctly, is inevitable if they don't try to get tangled up with the Western powers.
So, what happens to Manchukuko? Is it incorporated into a large 'Empire of China' puppet state with Pu-Yi reinstated as Emperor? Is it simply left as is, as a rump Qing state in the Co-Prosperity Sphere? Or is it integrated into a Greater Chinese Republic, with Pu-Yi deposed of his royalty?